package com.heima.kafka.sample;

import org.apache.kafka.clients.producer.*;

import java.util.Properties;
import java.util.concurrent.ExecutionException;

public class ProducerQuickStart {

    public static void main(String[] args) throws ExecutionException, InterruptedException {

        //1.kafka的配置信息
        Properties properties = new Properties();
        //kafka的连接地址
        properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "192.168.200.130:9092");
        //发送失败，失败的重试次数
        properties.put(ProducerConfig.RETRIES_CONFIG, 5);
        //消息key的序列化器

        properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
        //消息value的序列化器
        properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");

        //ack配置  消息确认机制
        properties.put(ProducerConfig.ACKS_CONFIG, "all");

        //重试次数
        properties.put(ProducerConfig.RETRIES_CONFIG,10);
        //数据压缩
        properties.put(ProducerConfig.COMPRESSION_TYPE_CONFIG,"snappy");



        //2.生产者对象
        KafkaProducer<String, String> producer = new KafkaProducer<String, String>(properties);
        //ProducerRecord<String, String> record = new ProducerRecord<String, String>("itcast-topic-input", "100001", "hello kafka");

        for (int i = 0; i < 5; i++) {

            ProducerRecord<String, String> record = new ProducerRecord<String, String>("itcast-topic-input", "hello kafka");
            //同步发送
            producer.send(record);
        }
        //3.发送消息
        //同步发送
        //RecordMetadata recordMetadata = producer.send(record).get();
        //System.out.println(recordMetadata.offset());

        //异步发送
        /*producer.send(record, new Callback() {
            @Override
            public void onCompletion(RecordMetadata recordMetadata, Exception e) {
                if (e != null) {
                    System.out.println("记录异常信息到日志表中");
                }
                System.out.println(recordMetadata.offset());
            }
        });*/


        //4.关闭消息通道，必须关闭，否则消息发送不成功
        producer.close();


    }


}
